iScienceProject
Science projects, contests and competitions using HOBO data loggers for teachers and their students in grades 5-12.

Intel International Science and Engineering Fair
ISEF provides worldwide competitive scholarships, tuition grants, internships, scientific field trips. Winner attends Nobel ceremony.

School Science Fairs
Designed to aid students in the most difficult aspect of their science fair experience: getting an idea.

Intel Science Talent Search
Formerly Westinghouse Science Talent Search. Continuously operated by Science Service, Inc.

Science Competitions
NSTA position statement.

World-Wide Web Virtual Library: Science Fairs
International, national, regional, local and virtual science fairs.

Discovery Channel: Science Fair Central
Separate science fair guides for students, teachers, and parents.

Science Fair Videos
offering a number of science fair and invention videos for use at elementary, middle and high schools the site also provides a comprehensive list of science fair resources.

Science Fair Projects
A list of science fair links, a review of science fair books, and some suggestions for science fair projects.

Siemens Westinghouse Science and Technology Competition
National research competition in the sciences and mathematics for high school students. It awards one million dollars in scholarships, annually.

Experriencescience.com
Essential information for students participating in science fair competitions by Romina Perri.Intel ISEF.